Taylor became only the fifth man to simultaneously hold all titles in a weight category when he beat Jose Ramirez in May.
Saturday night's historic win means Taylor is the UK's first unified world champion of the four-belt era.
Taylor beat Jose Ramirez on points to hold four world titles.
The fight in Las Vegas on Saturday could see the Scot become the undisputed super-lightweight world champion.
WBA and IBF champion sets sights on next challenge after making short work of Thailand's Apinun Khongsong.
The Scottish star further enhanced his reputation with a swift defeat of Thai challenger Apinun Khongsong.
Josh Taylor says he is fully prepared for the challenge of facing Apinun Khongsong.
WBA and IBF title holder is keeping fit during the coronavirus pandemic by training in his East Lothian garage.